ukelli-ui/other/countdown/countdown-canvas-bg.js

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"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _react = _interopRequireWildcard(require("react"));

var _propTypes = _interopRequireDefault(require("prop-types"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var CountdownBg =
/*#__PURE__*/
function (_PureComponent) {
  _inherits(CountdownBg, _PureComponent);

  function CountdownBg() {
    _classCallCheck(this, CountdownBg);

    return _possibleConstructorReturn(this, _getPrototypeOf(CountdownBg).apply(this, arguments));
  }

  _createClass(CountdownBg, [{
    key: "componentDidMount",
    value: function componentDidMount() {
      var id = this.props.id;
      var canvas = document.querySelector('#countDown' + id);
      var ctx = canvas.getContext('2d');
      var lineWidth = 3;
      var canvasW = canvas.width;
      var circleX = canvasW / 2;
      var circleY = circleX;
      var radius = (canvasW - lineWidth) / 2;
      this.animationTime = 200; // ms

      this.canvasInfo = {
        ctx: ctx,
        circleX: circleX,
        circleY: circleY,
        radius: radius,
        lineWidth: lineWidth
      };
      this.draw();
    }
  }, {
    key: "componentWillReceiveProps",
    value: function componentWillReceiveProps(nextProps) {
      var self = this;
      var currPercent = self.props.percent;

      if (this.props.text !== nextProps.text) {
        if (!!self.timer) clearInterval(self.timer);
        self.timer = setInterval(function () {
          var nextPercent = nextProps.percent;
          var unit = (nextPercent - currPercent) / 20;
          if (!nextPercent || currPercent >= nextPercent) return clearInterval(self.timer);
          currPercent += unit < 1 ? 1 : unit;
          self.draw(currPercent || 0);
        }, 20);
      }
    }
  }, {
    key: "circle",
    value: function circle(cx, cy, r) {
      var _this$canvasInfo = this.canvasInfo,
          ctx = _this$canvasInfo.ctx,
          circleX = _this$canvasInfo.circleX,
          circleY = _this$canvasInfo.circleY,
          radius = _this$canvasInfo.radius,
          lineWidth = _this$canvasInfo.lineWidth;
      ctx.beginPath();
      ctx.moveTo(cx + r, cy);
      ctx.lineWidth = lineWidth;
      ctx.strokeStyle = '#eee';
      ctx.arc(cx, cy, r, 0, Math.PI * 2);
      ctx.closePath();
      ctx.stroke();
    }
  }, {
    key: "sector",
    value: function sector(cx, cy, r, startAngle, endAngle, anti) {
      var _this$canvasInfo2 = this.canvasInfo,
          ctx = _this$canvasInfo2.ctx,
          circleX = _this$canvasInfo2.circleX,
          circleY = _this$canvasInfo2.circleY,
          radius = _this$canvasInfo2.radius,
          lineWidth = _this$canvasInfo2.lineWidth;
      ctx.beginPath();
      ctx.moveTo(cx, cy + r); // 从圆形底部开始画

      ctx.lineWidth = lineWidth; // 渐变色 - 可自定义

      var linGrad = ctx.createLinearGradient(circleX, circleY - radius - lineWidth, circleX, circleY + radius + lineWidth);
      linGrad.addColorStop(0.0, '#fe0362');
      linGrad.addColorStop(1.0, '#7473e3');
      ctx.strokeStyle = linGrad; // 圆弧两端的样式

      ctx.lineCap = 'round'; // 圆弧

      ctx.arc(cx, cy, r, startAngle * (Math.PI / 180.0) + Math.PI / 2, endAngle * (Math.PI / 180.0) + Math.PI / 2, !!anti);
      ctx.stroke();
    }
  }, {
    key: "draw",
    value: function draw(nextPercent) {
      var _this$canvasInfo3 = this.canvasInfo,
          ctx = _this$canvasInfo3.ctx,
          circleX = _this$canvasInfo3.circleX,
          circleY = _this$canvasInfo3.circleY,
          radius = _this$canvasInfo3.radius,
          lineWidth = _this$canvasInfo3.lineWidth,
          fontSize = _this$canvasInfo3.fontSize;
      var _this$props = this.props,
          percent = _this$props.percent,
          text = _this$props.text;
      var self = this; // 清除canvas内容

      ctx.clearRect(0, 0, circleX * 2, circleY * 2);
      this.circle(circleX, circleY, radius); // 中间的字
      // ctx.font = fontSize + 'px Arial, "Microsoft YaHei", "微软雅黑"';
      // ctx.textAlign = 'center';
      // ctx.textBaseline = 'middle';
      // ctx.fillStyle = '#999';
      // ctx.fillText(text, circleX, circleY);
      // 圆形
      // 圆弧

      this.sector(circleX, circleY, radius, 0, nextPercent / 100 * 360); // 控制结束时动画的速度
      // if (process / percent > 0.90) {
      //     process += 0.30;
      // } else if (process / percent > 0.80) {
      //     process += 0.55;
      // } else if (process / percent > 0.70) {
      //     process += 0.75;
      // } else {
      //     process += 1.0;
      // }
    }
  }, {
    key: "render",
    value: function render() {
      var id = this.props.id;
      return _react.default.createElement("canvas", {
        id: "countDown" + id,
        className: "countdown-bg",
        width: "60",
        height: "60"
      });
    }
  }]);

  return CountdownBg;
}(_react.PureComponent);

exports.default = CountdownBg;
CountdownBg.propTypes = {
  id: _propTypes.default.any.isRequired,
  percent: _propTypes.default.any.isRequired,
  text: _propTypes.default.any.isRequired
};